/* libwpg
 * Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the 
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 
 * Boston, MA  02111-1301 USA
 *
 * For further information visit http://libwpg.sourceforge.net
 */

/* "This product is not manufactured, approved, or supported by
 * Corel Corporation or Corel Corporation Limited."
 */

#include "WPGDashArray.h"

#include <vector>

namespace libwpg
{
class WPGDashArrayPrivate
{
public:
    WPGDashArrayPrivate() : dashes(), dots1(0), dots2(0),
		dots1len(0.0), dots2len(0.0), gap(0.0) {};
	void _recalculateDots();
	std::vector<double> dashes;
	int dots1;
	int dots2;
	double dots1len;
	double dots2len;
	double gap;
};
}

void libwpg::WPGDashArrayPrivate::_recalculateDots()
{
	dots1 = dots2 = 0,
	dots1len = dots2len = gap = 0.0;

	if (dashes.size() >= 2)
	{
		dots1len = dashes[0];
		gap = dashes[1];
	}
		
	unsigned count = dashes.size() / 2;
	unsigned i = 0;
	for (; i < count;)
	{
		if (dots1len == dashes[2*i])
			dots1++;
		else
			break;
		gap = gap < dashes[2*i+1] ?  dashes[2*i+1] : gap;
		i++;
	}
	if (i < count)
	{
		dots2len = dashes[2*i];
		gap = gap < dashes[2*i+1] ? dashes[2*i+1] : gap;
	}
	for (; i < count;)
	{
		if (dots2len == dashes[2*i])
			dots2++;
		else
			break;
		gap = gap < dashes[2*i+1] ? dashes[2*i+1] : gap;
		i++;
	}
	if (!dots2)
	{
		dots2 = dots1;
		dots2len = dots1len;
	}
}	
	

libwpg::WPGDashArray::WPGDashArray() : d(new libwpg::WPGDashArrayPrivate())
{
	d->_recalculateDots();
}

libwpg::WPGDashArray::~WPGDashArray()
{
	delete d;
}

libwpg::WPGDashArray::WPGDashArray(const libwpg::WPGDashArray& dash):
	d(new libwpg::WPGDashArrayPrivate())
{
	d->dashes = dash.d->dashes;
	d->_recalculateDots();
}

libwpg::WPGDashArray& libwpg::WPGDashArray::operator=(const libwpg::WPGDashArray& dash)
{
	d->dashes = dash.d->dashes;
	d->_recalculateDots();
	return *this;
}

int libwpg::WPGDashArray::getDots1() const
{
	return d->dots1;
}

double libwpg::WPGDashArray::getDots1Length() const
{
	return d->dots1len;
}

int libwpg::WPGDashArray::getDots2() const
{
	return d->dots2;
}

double libwpg::WPGDashArray::getDots2Length() const
{
	return d->dots2len;
}

double libwpg::WPGDashArray::getDistance() const
{
	return d->gap;
}

void libwpg::WPGDashArray::add(double p)
{
	d->dashes.push_back(p);
	d->_recalculateDots();
}